EFFICIENT METHOD FOR DETERMINING A PREFERRED ANTENNA PATTERN
First Claim
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1. A first apparatus for wireless communications, comprising:
- a receiver configured to iteratively receive, with a subset of antennas of the first apparatus, a plurality of reference signals transmitted by a second apparatus, wherein each reference signal is received utilizing a different combination of coefficients for the subset of antennas and the subset of antennas is adjusted after each iteration; and
a processing system configured to determine one or more coefficients corresponding to a preferred receive antenna pattern based on the plurality of reference signals and to configure the receiver to receive data from the second apparatus with the preferred receive antenna pattern.
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Abstract
Aspects of the present disclosure propose a method for determining preferred transmit and receive antenna patterns of a wireless device with respect to another wireless device. The method generally includes determining the beamforming or calibrating coefficients corresponding to the preferred transmit and receive antenna patterns of a wireless device iteratively.
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Citations
70 Claims
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1. A first apparatus for wireless communications, comprising:
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a receiver configured to iteratively receive, with a subset of antennas of the first apparatus, a plurality of reference signals transmitted by a second apparatus, wherein each reference signal is received utilizing a different combination of coefficients for the subset of antennas and the subset of antennas is adjusted after each iteration; and a processing system configured to determine one or more coefficients corresponding to a preferred receive antenna pattern based on the plurality of reference signals and to configure the receiver to receive data from the second apparatus with the preferred receive antenna pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A first apparatus for determining a preferred transmit antenna pattern for wireless communications, comprising:
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a processing system configured to assign a plurality of combinations of coefficients to one or more transmit antennas of the first apparatus for transmission in a plurality of iterations, wherein a number of nonzero coefficients in each combination is adjusted in each iteration; a transmitter configured to transmit, for each iteration, a plurality of reference signals to a second apparatus, wherein each reference signal is transmitted using one of the combinations of coefficients; and a receiver configured to receive a message from the second apparatus, wherein the message comprises an indication of a preferred combination of coefficients for the transmit antennas of the first apparatus, wherein the preferred combination is determined based on quality of a plurality of received reference signals at the second apparatus; wherein the processing system is configured to determine a preferred transmit antenna pattern utilizing at least the preferred combination of coefficients. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for wireless communications, comprising:
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iteratively receiving, with a subset of antennas of a first apparatus, a plurality of reference signals transmitted by a second apparatus, wherein each reference signal is received utilizing a different combination of coefficients for the subset of antennas and the subset of antennas is adjusted after each iteration; determining one or more coefficients for one or more antennas in the subset of antennas based on the plurality of reference signals; and receiving data from the second apparatus with the preferred receive antenna pattern determined utilizing the coefficients. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method for wireless communications, comprising:
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assigning a plurality of combinations of coefficients to one or more transmit antennas of the first apparatus for transmission in a plurality of iterations, wherein a number of nonzero coefficients in each combination is adjusted in each iteration; transmitting, for each iteration, a plurality of reference signals to a second apparatus, wherein each reference signal is transmitted using one of the combinations of coefficients; receiving a message from the second apparatus, wherein the message comprises an indication of a preferred combination of coefficients for the transmit antennas of the first apparatus, wherein the preferred combination is determined based on quality of a plurality of received reference signals at the second apparatus; and determining the preferred transmit antenna pattern utilizing at least the preferred combination of coefficients. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A first apparatus for wireless communications, comprising:
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means for iteratively receiving, with a subset of antennas of the first apparatus, a plurality of reference signals transmitted by a second apparatus, wherein each reference signal is received utilizing a different combination of coefficients for the subset of antennas and the subset of antennas is adjusted after each iteration; means for determining one or more coefficients for one or more antennas in the subset of antennas based on the plurality of reference signals; and means for receiving data from the second apparatus with the preferred receive antenna pattern determined utilizing the coefficients. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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56. A first apparatus for wireless communications, comprising:
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means for assigning a plurality of combinations of coefficients to one or more transmit antennas of the first apparatus for transmission in a plurality of iterations, wherein a number of nonzero coefficients in each combination is adjusted in each iteration; means for transmitting, for each iteration, a plurality of reference signals to a second apparatus, wherein each reference signal is transmitted using one of the combinations of coefficients; means for receiving a message from the second apparatus, wherein the message comprises an indication of a preferred combination of coefficients for the transmit antennas of the first apparatus, wherein the preferred combination is determined based on quality of a plurality of received reference signals at the second apparatus; and means for determining a preferred transmit antenna pattern utilizing at least the preferred combination of coefficients. - View Dependent Claims (57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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67. A computer-program product for determining a preferred receive antenna pattern for a first apparatus to communicate with a second apparatus, comprising a computer-readable medium comprising instructions executable for:
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iteratively receiving, with a subset of antennas of a first apparatus, a plurality of reference signals transmitted by a second apparatus, wherein each reference signal is received utilizing a different combination of coefficients for the subset of antennas and the subset of antennas is adjusted after each iteration; determining one or more coefficients for one or more antennas in the subset of antennas based on the plurality of reference signals; and receiving data from the second apparatus with the preferred receive antenna pattern determined utilizing the coefficients.
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68. A computer-program product for determining a preferred transmit antenna pattern for a first apparatus to communicate with a second apparatus, comprising a computer-readable medium comprising instructions executable for:
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assigning a plurality of combinations of coefficients to one or more transmit antennas of the first apparatus for transmission in a plurality of iterations, wherein a number of nonzero coefficients in each combination is adjusted in each iteration; transmitting, for each iteration, a plurality of reference signals to the second apparatus, wherein each reference signal is transmitted using one of the combinations of coefficients; receiving a message from the second apparatus, wherein the message comprises an indication of a preferred combination of coefficients for the transmit antennas of the first apparatus, wherein the preferred combination is determined based on quality of a plurality of received reference signals at the second apparatus; and determining the preferred transmit antenna pattern utilizing at least the preferred combination of coefficients.
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69. A station for wireless communications, comprising:
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a plurality of antennas; a receiver configured to iteratively receive, with a subset of the antennas of the station, a plurality of reference signals transmitted by an apparatus, wherein each reference signal is received utilizing a different combination of coefficients for the subset of antennas and the subset of antennas is adjusted after each iteration; and a processing system configured to determine one or more coefficients corresponding to a preferred receive antenna pattern based on the plurality of reference signals and to configure the receiver to receive data from the apparatus with the preferred receive antenna pattern.
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70. A station for wireless communications, comprising:
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a plurality of antennas; a processing system configured to assign a plurality of combinations of coefficients to one or more transmit antennas of the station for transmission in a plurality of iterations, wherein a number of nonzero coefficients in each combination is adjusted in each iteration; a transmitter configured to transmit, for each iteration, a plurality of reference signals to an apparatus, wherein each reference signal is transmitted using one of the combinations of coefficients; and a receiver configured to receive a message from the apparatus, wherein the message comprises an indication of a preferred combination of coefficients for the transmit antennas of the station, wherein the preferred combination is determined based on quality of a plurality of received reference signals at the apparatus; wherein the processing system is configured to determine a preferred transmit antenna pattern utilizing at least the preferred combination of coefficients.
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Specification